/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 20:46:30,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 20:46:31,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 20:46:31,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 20:46:31,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 20:46:31,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 20:46:31,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 20:46:31,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 20:46:31,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 20:46:31,050 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 20:46:31,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 20:46:31,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 20:46:31,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 20:46:31,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 20:46:31,055 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 20:46:31,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 20:46:31,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 20:46:31,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 20:46:31,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 20:46:31,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 20:46:31,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 20:46:31,062 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 20:46:31,063 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 20:46:31,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 20:46:31,063 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 20:46:31,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 20:46:31,064 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 20:46:31,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 20:46:31,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 20:46:31,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 20:46:31,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 20:46:31,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 20:46:31,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 20:46:31,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 20:46:31,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 20:46:31,070 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 20:46:31,071 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:31,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 20:46:31,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 20:46:31,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 20:46:31,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 20:46:31,074 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:31,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 20:46:31,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 20:46:31,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 20:46:31,377 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 20:46:31,378 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 20:46:31,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i [2024-11-04 20:46:33,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 20:46:33,422 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 20:46:33,423 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i [2024-11-04 20:46:33,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a151edb20/9fe521ceac044693895b92480330adab/FLAG7c253d0dd [2024-11-04 20:46:33,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a151edb20/9fe521ceac044693895b92480330adab [2024-11-04 20:46:33,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 20:46:33,618 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 20:46:33,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 20:46:33,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 20:46:33,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 20:46:33,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:46:33" (1/1) ... [2024-11-04 20:46:33,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f15ce8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:33, skipping insertion in model container [2024-11-04 20:46:33,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:46:33" (1/1) ... [2024-11-04 20:46:33,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 20:46:34,061 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2024-11-04 20:46:34,074 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2024-11-04 20:46:35,365 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,561 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,561 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,562 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,572 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,574 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,575 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,575 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,576 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,576 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,578 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,581 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,582 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,584 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,585 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,593 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,593 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,594 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,594 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,595 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,596 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,596 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,597 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,598 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,599 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,599 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,600 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:35,600 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:35,600 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,129 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,130 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,130 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,131 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,258 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:46:36,300 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-04 20:46:36,352 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 20:46:36,357 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2024-11-04 20:46:36,357 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2024-11-04 20:46:36,376 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,389 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,389 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,389 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,393 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,394 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,395 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,395 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,395 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,396 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,396 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,397 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,398 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,399 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,399 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,407 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,408 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,408 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,408 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,413 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,414 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,414 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,414 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,415 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,416 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,416 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,417 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,417 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,417 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,475 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,475 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,476 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,476 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,522 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:36,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:46:36,543 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 20:46:36,557 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2024-11-04 20:46:36,558 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2024-11-04 20:46:36,598 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,599 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,599 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,599 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,600 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,607 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,607 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,608 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,608 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,609 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,609 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,612 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,612 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:36,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:46:36,905 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-04 20:46:36,917 INFO L204 MainTranslator]: Completed translation [2024-11-04 20:46:36,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36 WrapperNode [2024-11-04 20:46:36,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 20:46:36,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 20:46:36,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 20:46:36,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 20:46:36,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,068 INFO L138 Inliner]: procedures = 687, calls = 1034, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 93 [2024-11-04 20:46:37,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 20:46:37,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 20:46:37,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 20:46:37,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 20:46:37,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,105 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,128 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 5, 13]. 65 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 4 writes are split as follows [0, 0, 4]. [2024-11-04 20:46:37,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 20:46:37,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 20:46:37,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 20:46:37,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 20:46:37,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (1/1) ... [2024-11-04 20:46:37,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 20:46:37,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 20:46:37,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-04 20:46:37,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-04 20:46:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2024-11-04 20:46:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2024-11-04 20:46:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-04 20:46:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 20:46:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-04 20:46:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-04 20:46:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-04 20:46:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-04 20:46:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-04 20:46:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-04 20:46:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-04 20:46:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-04 20:46:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 20:46:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-04 20:46:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-04 20:46:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-04 20:46:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 20:46:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 20:46:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-04 20:46:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-04 20:46:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 20:46:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 20:46:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-04 20:46:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-04 20:46:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-04 20:46:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-04 20:46:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-04 20:46:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-04 20:46:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-04 20:46:37,540 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 20:46:37,542 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 20:46:37,803 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-04 20:46:37,803 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 20:46:37,816 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 20:46:37,817 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-04 20:46:37,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:46:37 BoogieIcfgContainer [2024-11-04 20:46:37,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 20:46:37,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 20:46:37,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 20:46:37,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 20:46:37,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:46:33" (1/3) ... [2024-11-04 20:46:37,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c654f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:46:37, skipping insertion in model container [2024-11-04 20:46:37,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:36" (2/3) ... [2024-11-04 20:46:37,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c654f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:46:37, skipping insertion in model container [2024-11-04 20:46:37,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:46:37" (3/3) ... [2024-11-04 20:46:37,827 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_init_harness.i [2024-11-04 20:46:37,844 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 20:46:37,844 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 20:46:37,906 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 20:46:37,912 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4376e7db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 20:46:37,912 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 20:46:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 44 states have internal predecessors, (58), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 20:46:37,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-04 20:46:37,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:37,923 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:37,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:37,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:37,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1017333715, now seen corresponding path program 1 times [2024-11-04 20:46:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:37,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368922205] [2024-11-04 20:46:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:37,942 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:37,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:37,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:37,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-04 20:46:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:38,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 20:46:38,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:38,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:38,219 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:38,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368922205] [2024-11-04 20:46:38,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1368922205] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:38,221 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:38,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-04 20:46:38,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479406940] [2024-11-04 20:46:38,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:38,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 20:46:38,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 20:46:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 20:46:38,250 INFO L87 Difference]: Start difference. First operand has 61 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 44 states have internal predecessors, (58), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-04 20:46:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:38,271 INFO L93 Difference]: Finished difference Result 117 states and 158 transitions. [2024-11-04 20:46:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 20:46:38,273 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-11-04 20:46:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:38,278 INFO L225 Difference]: With dead ends: 117 [2024-11-04 20:46:38,278 INFO L226 Difference]: Without dead ends: 56 [2024-11-04 20:46:38,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 20:46:38,284 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:38,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 20:46:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-04 20:46:38,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-04 20:46:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-04 20:46:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2024-11-04 20:46:38,326 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 26 [2024-11-04 20:46:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:38,326 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2024-11-04 20:46:38,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-04 20:46:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2024-11-04 20:46:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-04 20:46:38,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:38,331 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:38,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-04 20:46:38,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:38,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:38,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1834982165, now seen corresponding path program 1 times [2024-11-04 20:46:38,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:38,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834130657] [2024-11-04 20:46:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:38,534 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:38,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:38,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:38,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-04 20:46:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:38,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-04 20:46:38,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:38,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:46:38,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-11-04 20:46:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:39,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:40,495 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:40,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834130657] [2024-11-04 20:46:40,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1834130657] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:40,495 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:40,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 6] imperfect sequences [] total 14 [2024-11-04 20:46:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27411644] [2024-11-04 20:46:40,496 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:40,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-04 20:46:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-04 20:46:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-04 20:46:40,500 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-04 20:46:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:41,379 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2024-11-04 20:46:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-04 20:46:41,380 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-04 20:46:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:41,382 INFO L225 Difference]: With dead ends: 114 [2024-11-04 20:46:41,382 INFO L226 Difference]: Without dead ends: 65 [2024-11-04 20:46:41,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-04 20:46:41,384 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 61 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:41,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 389 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-04 20:46:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-04 20:46:41,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-11-04 20:46:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 46 states have internal predecessors, (57), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-04 20:46:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2024-11-04 20:46:41,399 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 26 [2024-11-04 20:46:41,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:41,400 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2024-11-04 20:46:41,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-04 20:46:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2024-11-04 20:46:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-04 20:46:41,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:41,401 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:41,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-04 20:46:41,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:41,602 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:41,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1650638505, now seen corresponding path program 1 times [2024-11-04 20:46:41,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:41,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421551687] [2024-11-04 20:46:41,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:41,603 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:41,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:41,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:41,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-04 20:46:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:41,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-04 20:46:41,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:41,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:46:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:42,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:42,858 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:42,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421551687] [2024-11-04 20:46:42,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1421551687] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:42,858 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:42,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2024-11-04 20:46:42,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864929026] [2024-11-04 20:46:42,858 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:42,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-04 20:46:42,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:42,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-04 20:46:42,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-04 20:46:42,860 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 19 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-04 20:46:43,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:43,562 INFO L93 Difference]: Finished difference Result 131 states and 168 transitions. [2024-11-04 20:46:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-04 20:46:43,563 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-04 20:46:43,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:43,564 INFO L225 Difference]: With dead ends: 131 [2024-11-04 20:46:43,564 INFO L226 Difference]: Without dead ends: 79 [2024-11-04 20:46:43,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-11-04 20:46:43,566 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 139 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:43,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 616 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-04 20:46:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-04 20:46:43,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-11-04 20:46:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 55 states have internal predecessors, (72), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-04 20:46:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2024-11-04 20:46:43,584 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 26 [2024-11-04 20:46:43,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:43,585 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2024-11-04 20:46:43,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-04 20:46:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2024-11-04 20:46:43,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-04 20:46:43,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:43,586 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:43,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-04 20:46:43,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:43,787 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:43,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1257611495, now seen corresponding path program 1 times [2024-11-04 20:46:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:43,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165783021] [2024-11-04 20:46:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:43,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:43,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:43,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:43,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-04 20:46:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:44,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-04 20:46:44,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:44,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-11-04 20:46:44,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 7 [2024-11-04 20:46:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:44,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:45,322 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165783021] [2024-11-04 20:46:45,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1165783021] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:45,322 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:45,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 7] imperfect sequences [] total 16 [2024-11-04 20:46:45,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624628216] [2024-11-04 20:46:45,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:45,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-04 20:46:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:45,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-04 20:46:45,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-04 20:46:45,326 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand has 16 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-04 20:46:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:46,178 INFO L93 Difference]: Finished difference Result 158 states and 211 transitions. [2024-11-04 20:46:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-04 20:46:46,179 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-04 20:46:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:46,180 INFO L225 Difference]: With dead ends: 158 [2024-11-04 20:46:46,180 INFO L226 Difference]: Without dead ends: 96 [2024-11-04 20:46:46,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-04 20:46:46,182 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 112 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:46,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 460 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-04 20:46:46,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-04 20:46:46,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2024-11-04 20:46:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.368421052631579) internal successors, (78), 59 states have internal predecessors, (78), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-04 20:46:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2024-11-04 20:46:46,199 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 26 [2024-11-04 20:46:46,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:46,199 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2024-11-04 20:46:46,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-04 20:46:46,199 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2024-11-04 20:46:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-04 20:46:46,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:46,200 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:46,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-04 20:46:46,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:46,401 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:46,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:46,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1515776933, now seen corresponding path program 1 times [2024-11-04 20:46:46,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:46,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575720287] [2024-11-04 20:46:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:46,402 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:46,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:46,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:46,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-04 20:46:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:46,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-04 20:46:46,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:46,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:46:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:47,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:47,404 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575720287] [2024-11-04 20:46:47,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1575720287] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:47,405 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:47,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2024-11-04 20:46:47,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864852909] [2024-11-04 20:46:47,405 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:47,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-04 20:46:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:47,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-04 20:46:47,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-04 20:46:47,406 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 19 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-04 20:46:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:48,604 INFO L93 Difference]: Finished difference Result 180 states and 245 transitions. [2024-11-04 20:46:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-04 20:46:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-04 20:46:48,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:48,606 INFO L225 Difference]: With dead ends: 180 [2024-11-04 20:46:48,606 INFO L226 Difference]: Without dead ends: 114 [2024-11-04 20:46:48,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-11-04 20:46:48,608 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 101 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:48,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 721 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-04 20:46:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-04 20:46:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 81. [2024-11-04 20:46:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 63 states have internal predecessors, (84), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-04 20:46:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2024-11-04 20:46:48,630 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 106 transitions. Word has length 26 [2024-11-04 20:46:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:48,631 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 106 transitions. [2024-11-04 20:46:48,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-04 20:46:48,631 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 106 transitions. [2024-11-04 20:46:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-04 20:46:48,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:48,632 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:48,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-04 20:46:48,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:48,832 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:48,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash 504659683, now seen corresponding path program 1 times [2024-11-04 20:46:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895634645] [2024-11-04 20:46:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:48,834 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:48,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:48,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:48,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-04 20:46:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:48,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-04 20:46:48,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:49,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:49,128 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895634645] [2024-11-04 20:46:49,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [895634645] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:49,128 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:49,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2024-11-04 20:46:49,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530579215] [2024-11-04 20:46:49,128 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:49,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-04 20:46:49,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:49,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-04 20:46:49,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-04 20:46:49,130 INFO L87 Difference]: Start difference. First operand 81 states and 106 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-04 20:46:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:49,244 INFO L93 Difference]: Finished difference Result 177 states and 242 transitions. [2024-11-04 20:46:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-04 20:46:49,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-04 20:46:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:49,246 INFO L225 Difference]: With dead ends: 177 [2024-11-04 20:46:49,246 INFO L226 Difference]: Without dead ends: 74 [2024-11-04 20:46:49,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-04 20:46:49,248 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 22 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:49,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 460 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 20:46:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-04 20:46:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-04 20:46:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 56 states have internal predecessors, (72), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-04 20:46:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2024-11-04 20:46:49,278 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 26 [2024-11-04 20:46:49,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:49,278 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2024-11-04 20:46:49,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-04 20:46:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2024-11-04 20:46:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-04 20:46:49,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:49,279 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:49,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-11-04 20:46:49,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:49,480 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:49,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1687611897, now seen corresponding path program 1 times [2024-11-04 20:46:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452024771] [2024-11-04 20:46:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:49,481 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:49,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:49,482 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:49,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-04 20:46:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:49,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-04 20:46:49,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:49,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:49,773 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:49,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452024771] [2024-11-04 20:46:49,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1452024771] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:49,773 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:49,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2024-11-04 20:46:49,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418855252] [2024-11-04 20:46:49,774 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:49,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-04 20:46:49,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:49,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-04 20:46:49,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-04 20:46:49,775 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-04 20:46:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:49,897 INFO L93 Difference]: Finished difference Result 149 states and 189 transitions. [2024-11-04 20:46:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 20:46:49,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-04 20:46:49,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:49,899 INFO L225 Difference]: With dead ends: 149 [2024-11-04 20:46:49,899 INFO L226 Difference]: Without dead ends: 80 [2024-11-04 20:46:49,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-04 20:46:49,900 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 32 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:49,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 309 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 20:46:49,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-04 20:46:49,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2024-11-04 20:46:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 56 states have internal predecessors, (70), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-04 20:46:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2024-11-04 20:46:49,915 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 28 [2024-11-04 20:46:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:49,915 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2024-11-04 20:46:49,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-04 20:46:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2024-11-04 20:46:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-04 20:46:49,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:49,916 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:49,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-04 20:46:50,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:50,117 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:50,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1850407916, now seen corresponding path program 1 times [2024-11-04 20:46:50,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:50,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553208498] [2024-11-04 20:46:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:50,118 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:50,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:50,120 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:50,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-04 20:46:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:50,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 20:46:50,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:50,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:50,449 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553208498] [2024-11-04 20:46:50,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1553208498] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:50,449 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:50,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 12 [2024-11-04 20:46:50,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076974273] [2024-11-04 20:46:50,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:50,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-04 20:46:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-04 20:46:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-04 20:46:50,451 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-04 20:46:50,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:50,682 INFO L93 Difference]: Finished difference Result 161 states and 205 transitions. [2024-11-04 20:46:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-04 20:46:50,683 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-04 20:46:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:50,684 INFO L225 Difference]: With dead ends: 161 [2024-11-04 20:46:50,684 INFO L226 Difference]: Without dead ends: 90 [2024-11-04 20:46:50,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-04 20:46:50,686 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 34 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:50,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 443 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 20:46:50,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-04 20:46:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2024-11-04 20:46:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 58 states have internal predecessors, (72), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-04 20:46:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2024-11-04 20:46:50,703 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 30 [2024-11-04 20:46:50,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:50,703 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2024-11-04 20:46:50,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-04 20:46:50,704 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2024-11-04 20:46:50,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-04 20:46:50,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:50,704 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:50,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-04 20:46:50,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:50,905 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:50,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1395309347, now seen corresponding path program 1 times [2024-11-04 20:46:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:50,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394205765] [2024-11-04 20:46:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:50,906 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:50,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:50,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:50,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-04 20:46:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:51,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 20:46:51,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:51,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:51,146 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:51,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394205765] [2024-11-04 20:46:51,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [394205765] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:51,146 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:51,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 3] imperfect sequences [] total 9 [2024-11-04 20:46:51,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993103011] [2024-11-04 20:46:51,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:51,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 20:46:51,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:51,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 20:46:51,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-04 20:46:51,148 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-04 20:46:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:51,348 INFO L93 Difference]: Finished difference Result 155 states and 199 transitions. [2024-11-04 20:46:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 20:46:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-04 20:46:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:51,349 INFO L225 Difference]: With dead ends: 155 [2024-11-04 20:46:51,349 INFO L226 Difference]: Without dead ends: 90 [2024-11-04 20:46:51,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-04 20:46:51,363 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 24 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:51,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 341 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 20:46:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-04 20:46:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2024-11-04 20:46:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 60 states have internal predecessors, (74), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-04 20:46:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2024-11-04 20:46:51,380 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 31 [2024-11-04 20:46:51,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:51,381 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2024-11-04 20:46:51,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-04 20:46:51,381 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2024-11-04 20:46:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-04 20:46:51,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:51,382 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:51,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-04 20:46:51,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:51,583 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:51,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:51,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1854431003, now seen corresponding path program 1 times [2024-11-04 20:46:51,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:51,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330780582] [2024-11-04 20:46:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:51,584 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:51,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:51,585 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:51,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-04 20:46:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:52,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-04 20:46:52,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:52,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-11-04 20:46:52,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:46:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:53,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:46:55,186 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:55,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330780582] [2024-11-04 20:46:55,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [330780582] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:55,186 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:55,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 11] imperfect sequences [] total 24 [2024-11-04 20:46:55,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020219289] [2024-11-04 20:46:55,186 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:55,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-04 20:46:55,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:55,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-04 20:46:55,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-04 20:46:55,189 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 24 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 8 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-04 20:46:58,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:58,823 INFO L93 Difference]: Finished difference Result 168 states and 213 transitions. [2024-11-04 20:46:58,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 20:46:58,824 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 8 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 39 [2024-11-04 20:46:58,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:58,826 INFO L225 Difference]: With dead ends: 168 [2024-11-04 20:46:58,826 INFO L226 Difference]: Without dead ends: 101 [2024-11-04 20:46:58,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2024-11-04 20:46:58,827 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 79 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:58,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 675 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-04 20:46:58,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-04 20:46:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2024-11-04 20:46:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.278688524590164) internal successors, (78), 64 states have internal predecessors, (78), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-04 20:46:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2024-11-04 20:46:58,851 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 39 [2024-11-04 20:46:58,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:58,851 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2024-11-04 20:46:58,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 8 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-04 20:46:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2024-11-04 20:46:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-04 20:46:58,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:58,853 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:58,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2024-11-04 20:46:59,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:59,053 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:59,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1596265565, now seen corresponding path program 1 times [2024-11-04 20:46:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:59,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662745115] [2024-11-04 20:46:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:59,054 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:59,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:59,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:59,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-04 20:46:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:59,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-04 20:46:59,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:59,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:46:59,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 7 [2024-11-04 20:47:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:47:06,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:47:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:47:07,039 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:47:07,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662745115] [2024-11-04 20:47:07,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [662745115] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:47:07,039 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:47:07,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 11] imperfect sequences [] total 27 [2024-11-04 20:47:07,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092027151] [2024-11-04 20:47:07,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:47:07,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-04 20:47:07,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:47:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-04 20:47:07,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=608, Unknown=1, NotChecked=0, Total=702 [2024-11-04 20:47:07,041 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand has 27 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 7 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-04 20:47:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:47:11,012 INFO L93 Difference]: Finished difference Result 183 states and 245 transitions. [2024-11-04 20:47:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-04 20:47:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 7 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2024-11-04 20:47:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:47:11,014 INFO L225 Difference]: With dead ends: 183 [2024-11-04 20:47:11,014 INFO L226 Difference]: Without dead ends: 111 [2024-11-04 20:47:11,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=179, Invalid=1226, Unknown=1, NotChecked=0, Total=1406 [2024-11-04 20:47:11,015 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 119 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-04 20:47:11,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 743 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-04 20:47:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-04 20:47:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2024-11-04 20:47:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 76 states have internal predecessors, (91), 13 states have call successors, (13), 7 states have call predecessors, (13), 10 states have return successors, (19), 11 states have call predecessors, (19), 12 states have call successors, (19) [2024-11-04 20:47:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2024-11-04 20:47:11,038 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 39 [2024-11-04 20:47:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:47:11,039 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2024-11-04 20:47:11,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 7 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-04 20:47:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2024-11-04 20:47:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-04 20:47:11,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:47:11,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:47:11,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-11-04 20:47:11,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:11,240 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:47:11,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:47:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1687584481, now seen corresponding path program 1 times [2024-11-04 20:47:11,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:47:11,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801976936] [2024-11-04 20:47:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:47:11,241 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:11,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:47:11,243 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:47:11,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-04 20:47:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:47:11,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-04 20:47:11,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:47:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:47:11,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:47:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:47:11,658 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:47:11,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801976936] [2024-11-04 20:47:11,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1801976936] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:47:11,658 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:47:11,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 14 [2024-11-04 20:47:11,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786790196] [2024-11-04 20:47:11,659 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:47:11,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-04 20:47:11,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:47:11,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-04 20:47:11,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-04 20:47:11,660 INFO L87 Difference]: Start difference. First operand 95 states and 123 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-04 20:47:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:47:11,972 INFO L93 Difference]: Finished difference Result 216 states and 297 transitions. [2024-11-04 20:47:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-04 20:47:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2024-11-04 20:47:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:47:11,973 INFO L225 Difference]: With dead ends: 216 [2024-11-04 20:47:11,973 INFO L226 Difference]: Without dead ends: 107 [2024-11-04 20:47:11,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-04 20:47:11,975 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 53 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 20:47:11,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 614 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 20:47:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-04 20:47:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2024-11-04 20:47:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 77 states have internal predecessors, (91), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (19), 11 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-04 20:47:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2024-11-04 20:47:12,004 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 39 [2024-11-04 20:47:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:47:12,005 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2024-11-04 20:47:12,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-04 20:47:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2024-11-04 20:47:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-04 20:47:12,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:47:12,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:47:12,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-04 20:47:12,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:12,207 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:47:12,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:47:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1045188466, now seen corresponding path program 1 times [2024-11-04 20:47:12,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:47:12,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269698339] [2024-11-04 20:47:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:47:12,207 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:12,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:47:12,209 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:47:12,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-04 20:47:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:47:12,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-04 20:47:12,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:47:12,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 7 [2024-11-04 20:47:12,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:47:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:47:18,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:47:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:47:18,404 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:47:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269698339] [2024-11-04 20:47:18,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1269698339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 20:47:18,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 20:47:18,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 21 [2024-11-04 20:47:18,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807599754] [2024-11-04 20:47:18,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 20:47:18,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-04 20:47:18,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:47:18,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-04 20:47:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=353, Unknown=1, NotChecked=0, Total=420 [2024-11-04 20:47:18,406 INFO L87 Difference]: Start difference. First operand 96 states and 124 transitions. Second operand has 21 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-04 20:47:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:47:20,652 INFO L93 Difference]: Finished difference Result 208 states and 285 transitions. [2024-11-04 20:47:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 20:47:20,652 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 41 [2024-11-04 20:47:20,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:47:20,654 INFO L225 Difference]: With dead ends: 208 [2024-11-04 20:47:20,654 INFO L226 Difference]: Without dead ends: 123 [2024-11-04 20:47:20,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=140, Invalid=789, Unknown=1, NotChecked=0, Total=930 [2024-11-04 20:47:20,656 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 116 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-04 20:47:20,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 554 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-04 20:47:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-04 20:47:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 99. [2024-11-04 20:47:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 79 states have internal predecessors, (95), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-04 20:47:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2024-11-04 20:47:20,688 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 41 [2024-11-04 20:47:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:47:20,689 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2024-11-04 20:47:20,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-04 20:47:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2024-11-04 20:47:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-04 20:47:20,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:47:20,690 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:47:20,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-04 20:47:20,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:20,890 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:47:20,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:47:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 964483973, now seen corresponding path program 1 times [2024-11-04 20:47:20,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:47:20,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212230123] [2024-11-04 20:47:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:47:20,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:20,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:47:20,895 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:47:20,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-04 20:47:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:47:21,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-04 20:47:21,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:47:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-04 20:47:21,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:47:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-04 20:47:21,368 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:47:21,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212230123] [2024-11-04 20:47:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1212230123] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:47:21,369 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:47:21,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2024-11-04 20:47:21,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908963380] [2024-11-04 20:47:21,369 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:47:21,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-04 20:47:21,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:47:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-04 20:47:21,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-04 20:47:21,370 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 14 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-04 20:47:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:47:21,458 INFO L93 Difference]: Finished difference Result 115 states and 145 transitions. [2024-11-04 20:47:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 20:47:21,459 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-04 20:47:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:47:21,460 INFO L225 Difference]: With dead ends: 115 [2024-11-04 20:47:21,460 INFO L226 Difference]: Without dead ends: 113 [2024-11-04 20:47:21,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-04 20:47:21,461 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 6 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 20:47:21,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 776 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 20:47:21,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-04 20:47:21,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2024-11-04 20:47:21,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 80 states have (on average 1.2625) internal successors, (101), 86 states have internal predecessors, (101), 15 states have call successors, (15), 8 states have call predecessors, (15), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-04 20:47:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2024-11-04 20:47:21,499 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 42 [2024-11-04 20:47:21,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:47:21,499 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2024-11-04 20:47:21,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-04 20:47:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2024-11-04 20:47:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-04 20:47:21,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:47:21,500 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:47:21,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-04 20:47:21,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:21,701 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:47:21,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:47:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1440497479, now seen corresponding path program 1 times [2024-11-04 20:47:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:47:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499132131] [2024-11-04 20:47:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:47:21,702 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:21,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:47:21,703 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:47:21,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-04 20:47:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:47:22,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-04 20:47:22,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:47:22,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:47:22,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:47:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-04 20:47:23,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:47:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-04 20:47:23,919 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:47:23,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499132131] [2024-11-04 20:47:23,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1499132131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 20:47:23,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 20:47:23,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2024-11-04 20:47:23,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041811187] [2024-11-04 20:47:23,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 20:47:23,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-04 20:47:23,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:47:23,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-04 20:47:23,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-04 20:47:23,921 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. Second operand has 19 states, 15 states have (on average 4.066666666666666) internal successors, (61), 18 states have internal predecessors, (61), 10 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-04 20:47:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:47:25,740 INFO L93 Difference]: Finished difference Result 229 states and 299 transitions. [2024-11-04 20:47:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-04 20:47:25,740 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 4.066666666666666) internal successors, (61), 18 states have internal predecessors, (61), 10 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 50 [2024-11-04 20:47:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:47:25,742 INFO L225 Difference]: With dead ends: 229 [2024-11-04 20:47:25,742 INFO L226 Difference]: Without dead ends: 132 [2024-11-04 20:47:25,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-04 20:47:25,743 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 89 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-04 20:47:25,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 526 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-04 20:47:25,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-04 20:47:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 100. [2024-11-04 20:47:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 80 states have internal predecessors, (94), 13 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (16), 11 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-04 20:47:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2024-11-04 20:47:25,782 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 50 [2024-11-04 20:47:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:47:25,783 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2024-11-04 20:47:25,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 4.066666666666666) internal successors, (61), 18 states have internal predecessors, (61), 10 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-04 20:47:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2024-11-04 20:47:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-04 20:47:25,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:47:25,784 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:47:25,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-04 20:47:25,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:25,984 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:47:25,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:47:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash -41969126, now seen corresponding path program 1 times [2024-11-04 20:47:25,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:47:25,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974093773] [2024-11-04 20:47:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:47:25,985 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:47:25,986 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:47:25,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-04 20:47:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:47:26,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-04 20:47:26,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:47:26,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:47:26,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2024-11-04 20:47:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:47:28,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:47:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-04 20:47:29,485 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:47:29,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974093773] [2024-11-04 20:47:29,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1974093773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 20:47:29,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 20:47:29,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2024-11-04 20:47:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590567307] [2024-11-04 20:47:29,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 20:47:29,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-04 20:47:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:47:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-04 20:47:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2024-11-04 20:47:29,487 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 28 states, 25 states have (on average 3.2) internal successors, (80), 23 states have internal predecessors, (80), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-04 20:47:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:47:32,813 INFO L93 Difference]: Finished difference Result 187 states and 239 transitions. [2024-11-04 20:47:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-04 20:47:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.2) internal successors, (80), 23 states have internal predecessors, (80), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) Word has length 58 [2024-11-04 20:47:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:47:32,815 INFO L225 Difference]: With dead ends: 187 [2024-11-04 20:47:32,815 INFO L226 Difference]: Without dead ends: 134 [2024-11-04 20:47:32,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=181, Invalid=1301, Unknown=0, NotChecked=0, Total=1482 [2024-11-04 20:47:32,816 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 82 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-04 20:47:32,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 849 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-04 20:47:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-04 20:47:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 118. [2024-11-04 20:47:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 95 states have internal predecessors, (110), 14 states have call successors, (14), 10 states have call predecessors, (14), 11 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-04 20:47:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2024-11-04 20:47:32,862 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 58 [2024-11-04 20:47:32,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:47:32,862 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2024-11-04 20:47:32,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.2) internal successors, (80), 23 states have internal predecessors, (80), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-04 20:47:32,863 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2024-11-04 20:47:32,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-04 20:47:32,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:47:32,864 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:47:32,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-04 20:47:33,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:33,064 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:47:33,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:47:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1239716043, now seen corresponding path program 1 times [2024-11-04 20:47:33,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:47:33,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557370581] [2024-11-04 20:47:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:47:33,065 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:33,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:47:33,066 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:47:33,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-04 20:47:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:47:33,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-04 20:47:33,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:47:33,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:33,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:33,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:33,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 9 [2024-11-04 20:47:33,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:33,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:33,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:33,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 17 [2024-11-04 20:47:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-04 20:47:37,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:47:39,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4178 treesize of output 4082 [2024-11-04 20:47:39,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:39,746 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-04 20:47:39,749 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-04 20:47:39,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-04 20:47:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-04 20:47:39,773 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:47:39,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557370581] [2024-11-04 20:47:39,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [557370581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 20:47:39,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 20:47:39,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 26 [2024-11-04 20:47:39,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532656379] [2024-11-04 20:47:39,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 20:47:39,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-04 20:47:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:47:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-04 20:47:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2024-11-04 20:47:39,775 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand has 26 states, 21 states have (on average 4.714285714285714) internal successors, (99), 22 states have internal predecessors, (99), 13 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (17), 10 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-04 20:47:43,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 20:47:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:47:50,621 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2024-11-04 20:47:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-04 20:47:50,623 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 4.714285714285714) internal successors, (99), 22 states have internal predecessors, (99), 13 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (17), 10 states have call predecessors, (17), 12 states have call successors, (17) Word has length 78 [2024-11-04 20:47:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:47:50,624 INFO L225 Difference]: With dead ends: 148 [2024-11-04 20:47:50,624 INFO L226 Difference]: Without dead ends: 133 [2024-11-04 20:47:50,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 125 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=212, Invalid=909, Unknown=1, NotChecked=0, Total=1122 [2024-11-04 20:47:50,625 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 89 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-04 20:47:50,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 597 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 306 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2024-11-04 20:47:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-04 20:47:50,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 117. [2024-11-04 20:47:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 94 states have internal predecessors, (105), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (15), 11 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-04 20:47:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2024-11-04 20:47:50,667 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 78 [2024-11-04 20:47:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:47:50,668 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2024-11-04 20:47:50,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 4.714285714285714) internal successors, (99), 22 states have internal predecessors, (99), 13 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (17), 10 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-04 20:47:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2024-11-04 20:47:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-04 20:47:50,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:47:50,669 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:47:50,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-04 20:47:50,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:50,870 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:47:50,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:47:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2049062669, now seen corresponding path program 1 times [2024-11-04 20:47:50,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:47:50,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288585056] [2024-11-04 20:47:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:47:50,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:50,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:47:50,873 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:47:50,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-04 20:47:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:47:51,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-04 20:47:51,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:47:51,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:51,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:51,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:51,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 17 [2024-11-04 20:47:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:51,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:51,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:47:51,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 9